Real vs Eclipse Calculator 2
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Real
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Real-Time Atomic Clock This app shows the current time with high accuracy. It uses trusted NTP servers to stay precise. It updates in real time. It does not drift like a phone clock can. You get: • Accurate time based on atomic reference clocks • Automatic syncing with NTP servers • No setup required • Clean and easy display Useful when: • You need exact time for work or travel • You check time across devices • You need a reliable reference clock
Eclipse Calculator 2
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Whether you're an astronomy enthusiast, eclipse chaser, or curious observer, this app lets you explore, calculate, and simulate solar eclipses, lunar eclipses, and planetary transits with remarkable detail. Discover when and where future eclipses will be visible, how they will appear from your location—or anywhere else on Earth—and explore historical events spanning centuries. From global visibility maps to detailed local circumstances, everything you need to plan and enjoy these extraordinary astronomical events is at your fingertips. Key Features: • Complete database of all solar eclipses, lunar eclipses, and planetary transits from 1900 to 2100, with an optional extension covering 1550 to 2300. • Detailed calculations of the general circumstances for every event, including global visibility maps. • Accurate local circumstances for any location worldwide, including contact times, duration, Sun or Moon altitude, and other observational data. • Interactive maps showing eclipse visibility and local conditions. • Realistic simulations of eclipses and planetary transits from your chosen observing location. • Animated simulation of the Moon's shadow crossing Earth's surface during solar eclipses. • Animated simulation of the Moon passing through Earth's shadow during lunar eclipses. • Choose any observing location using GPS, a built-in location database, or manual coordinates. • Lunar limb profile and Baily's Beads calculations for advanced eclipse observation. • Sky simulation during totality. • Continuous GPS tracking with live updates of contact times—ideal for observing from moving locations such as ships. • Add eclipses and planetary transits directly to your personal calendar. • Built-in countdown timer for upcoming events.
Screenshots
Verdict
The clearest difference is price: Eclipse Calculator 2 at Free against Real's $2.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Eclipse Calculator 2 is free to download; Real costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Real | Eclipse Calculator 2 |
|---|---|---|
| Price | $2.99 | Free — better |
| Update frequency | Every 10 days | — |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 16.0 |
| Further details — not scored | ||
| Size | 24 MB | 88 MB |
| Age rating | 4+ | 4+ |
| Developer | Panupong Sakulsaeng | Eduardo Masana |
In-app purchases
Real
No in-app purchases
Eclipse Calculator 2
No in-app purchases









